1 /* Quicktime muxer plugin for GStreamer
2 * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 * Unless otherwise indicated, Source Code is licensed under MIT license.
21 * See further explanation attached in License Statement (distributed in the file
24 * Permission is hereby granted, free of charge, to any person obtaining a copy of
25 * this software and associated documentation files (the "Software"), to deal in
26 * the Software without restriction, including without limitation the rights to
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31 * The above copyright notice and this permission notice shall be included in all
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34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
37 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
44 * This module contains functions for serializing partial information from
45 * a mux in progress (by qtmux elements). This enables reconstruction of the
46 * moov box if a crash happens and thus recovering the movie file.
49 * 1) pipeline: ...yourelements ! qtmux moov-recovery-file=path.mrf ! \
50 * filesink location=moovie.mov
54 * 3) gst-launch qtmoovrecover recovery-input=path.mrf broken-input=moovie.mov \
55 fixed-output=recovered.mov
57 * 4) (Hopefully) enjoy recovered.mov.
59 * --- Recovery file layout ---
60 * 1) Version (a guint16)
61 * 2) Prefix atom (if present)
63 * 4) MVHD atom (without timescale/duration set)
66 * 7) list of trak atoms (stbl data is ignored, except for the stsd atom)
67 * 8) Buffers metadata (metadata that is relevant to the container)
68 * Buffers metadata are stored in the order they are added to the mdat,
69 * each entre has a fixed size and is stored in BE. booleans are stored
70 * as a single byte where 0 means false, otherwise is true.
76 * - guint64 chunk_offset;
79 * - guint64 pts_offset; (always present, ignored if do_pts is false)
81 * The mdat file might contain ftyp and then mdat, in case this is the faststart
82 * temporary file there is no ftyp and no mdat header, only the buffers data.
84 * Notes about recovery file layout: We still don't store tags nor EDTS data.
86 * IMPORTANT: this is still at a experimental state.
89 #include "atomsrecovery.h"
91 #define ATOMS_RECOV_OUTPUT_WRITE_ERROR(err) \
92 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE, \
93 "Failed to write to output file: %s", g_strerror (errno))
96 atoms_recov_write_version (FILE * f)
99 GST_WRITE_UINT16_BE (data, ATOMS_RECOV_FILE_VERSION);
100 return fwrite (data, 2, 1, f) == 1;
104 atoms_recov_write_ftyp_info (FILE * f, AtomFTYP * ftyp, GstBuffer * prefix)
114 bdata = gst_buffer_map (prefix, &bsize, NULL, GST_MAP_READ);
115 if (fwrite (bdata, 1, bsize, f) != bsize) {
116 gst_buffer_unmap (prefix, bdata, bsize);
119 gst_buffer_unmap (prefix, bdata, bsize);
121 if (!atom_ftyp_copy_data (ftyp, &data, &size, &offset)) {
124 if (fwrite (data, 1, offset, f) != offset) {
131 * Writes important info on the 'moov' atom (non-trak related)
132 * to be able to recover the moov structure after a crash.
134 * Currently, it writes the MVHD atom.
137 atoms_recov_write_moov_info (FILE * f, AtomMOOV * moov)
142 guint64 atom_size = 0;
147 data = g_malloc (size);
148 atom_size = atom_mvhd_copy_data (&moov->mvhd, &data, &size, &offset);
150 writen = fwrite (data, 1, atom_size, f);
152 return atom_size > 0 && writen == atom_size;
156 * Writes the number of traks to the file.
157 * This simply writes a guint32 in BE.
160 atoms_recov_write_traks_number (FILE * f, guint32 traks)
163 GST_WRITE_UINT32_BE (data, traks);
164 return fwrite (data, 4, 1, f) == 1;
168 * Writes the moov's timescale to the file
169 * This simply writes a guint32 in BE.
172 atoms_recov_write_moov_timescale (FILE * f, guint32 timescale)
175 GST_WRITE_UINT32_BE (data, timescale);
176 return fwrite (data, 4, 1, f) == 1;
180 * Writes the trak atom to the file.
183 atoms_recov_write_trak_info (FILE * f, AtomTRAK * trak)
188 guint64 atom_size = 0;
191 /* buffer is realloced to a larger size if needed */
193 data = g_malloc (size);
194 atom_size = atom_trak_copy_data (trak, &data, &size, &offset);
196 writen = fwrite (data, atom_size, 1, f);
198 return atom_size > 0 && writen == atom_size;
202 atoms_recov_write_trak_samples (FILE * f, AtomTRAK * trak, guint32 nsamples,
203 guint32 delta, guint32 size, guint64 chunk_offset, gboolean sync,
204 gboolean do_pts, gint64 pts_offset)
206 guint8 data[TRAK_BUFFER_ENTRY_INFO_SIZE];
208 * We have to write a TrakBufferEntryInfo
210 GST_WRITE_UINT32_BE (data + 0, trak->tkhd.track_ID);
211 GST_WRITE_UINT32_BE (data + 4, nsamples);
212 GST_WRITE_UINT32_BE (data + 8, delta);
213 GST_WRITE_UINT32_BE (data + 12, size);
214 GST_WRITE_UINT64_BE (data + 16, chunk_offset);
216 GST_WRITE_UINT8 (data + 24, 1);
218 GST_WRITE_UINT8 (data + 24, 0);
220 GST_WRITE_UINT8 (data + 25, 1);
221 GST_WRITE_UINT64_BE (data + 26, pts_offset);
223 GST_WRITE_UINT8 (data + 25, 0);
224 GST_WRITE_UINT64_BE (data + 26, 0);
227 return fwrite (data, 1, TRAK_BUFFER_ENTRY_INFO_SIZE, f) ==
228 TRAK_BUFFER_ENTRY_INFO_SIZE;
232 atoms_recov_write_headers (FILE * f, AtomFTYP * ftyp, GstBuffer * prefix,
233 AtomMOOV * moov, guint32 timescale, guint32 traks_number)
235 if (!atoms_recov_write_version (f)) {
239 if (!atoms_recov_write_ftyp_info (f, ftyp, prefix)) {
243 if (!atoms_recov_write_moov_info (f, moov)) {
247 if (!atoms_recov_write_moov_timescale (f, timescale)) {
251 if (!atoms_recov_write_traks_number (f, traks_number)) {
259 read_atom_header (FILE * f, guint32 * fourcc, guint32 * size)
263 if (fread (aux, 1, 8, f) != 8)
265 *size = GST_READ_UINT32_BE (aux);
266 *fourcc = GST_READ_UINT32_LE (aux + 4);
271 moov_recov_file_parse_prefix (MoovRecovFile * moovrf)
275 guint32 total_size = 0;
276 if (fseek (moovrf->file, 2, SEEK_SET) != 0)
278 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
282 if (fourcc != FOURCC_ftyp) {
283 /* we might have a prefix here */
284 if (fseek (moovrf->file, size - 8, SEEK_CUR) != 0)
289 /* now read the ftyp */
290 if (!read_atom_header (moovrf->file, &fourcc, &size))
294 /* this has to be the ftyp */
295 if (fourcc != FOURCC_ftyp)
298 moovrf->prefix_size = total_size;
299 return fseek (moovrf->file, size - 8, SEEK_CUR) == 0;
303 moov_recov_file_parse_mvhd (MoovRecovFile * moovrf)
307 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
310 /* check for sanity */
311 if (fourcc != FOURCC_mvhd)
314 moovrf->mvhd_size = size;
315 moovrf->mvhd_pos = ftell (moovrf->file) - 8;
317 /* skip the remaining of the mvhd in the file */
318 return fseek (moovrf->file, size - 8, SEEK_CUR) == 0;
322 mdat_recov_file_parse_mdat_start (MdatRecovFile * mdatrf)
324 guint32 fourcc, size;
326 if (!read_atom_header (mdatrf->file, &fourcc, &size)) {
330 mdatrf->mdat_header_size = 16;
331 mdatrf->mdat_size = 16;
333 mdatrf->mdat_header_size = 8;
334 mdatrf->mdat_size = 8;
336 mdatrf->mdat_start = ftell (mdatrf->file) - 8;
338 return fourcc == FOURCC_mdat;
342 mdat_recov_file_create (FILE * file, gboolean datafile, GError ** err)
344 MdatRecovFile *mrf = g_new0 (MdatRecovFile, 1);
345 guint32 fourcc, size;
347 g_return_val_if_fail (file != NULL, NULL);
350 mrf->rawfile = datafile;
352 /* get the file/data length */
353 if (fseek (file, 0, SEEK_END) != 0)
354 goto file_length_error;
355 /* still needs to deduce the mdat header and ftyp size */
356 mrf->data_size = ftell (file);
357 if (mrf->data_size == -1L)
358 goto file_length_error;
360 if (fseek (file, 0, SEEK_SET) != 0)
361 goto file_seek_error;
364 /* this file contains no atoms, only raw data to be placed on the mdat
365 * this happens when faststart mode is used */
367 mrf->mdat_header_size = 16;
372 if (!read_atom_header (file, &fourcc, &size)) {
375 if (fourcc != FOURCC_ftyp) {
376 /* this could be a prefix atom, let's skip it and try again */
377 if (fseek (file, size - 8, SEEK_CUR) != 0) {
378 goto file_seek_error;
380 if (!read_atom_header (file, &fourcc, &size)) {
385 if (fourcc != FOURCC_ftyp) {
388 if (fseek (file, size - 8, SEEK_CUR) != 0)
389 goto file_seek_error;
391 /* we don't parse this if we have a tmpdatafile */
392 if (!mdat_recov_file_parse_mdat_start (mrf)) {
393 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
394 "Error while parsing mdat atom");
401 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
402 "Failed to parse atom");
406 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
407 "Failed to seek to start of the file");
411 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
412 "Failed to determine file size");
416 mdat_recov_file_free (mrf);
421 mdat_recov_file_free (MdatRecovFile * mrf)
428 moov_recov_parse_num_traks (MoovRecovFile * moovrf)
431 if (fread (traks, 1, 4, moovrf->file) != 4)
433 moovrf->num_traks = GST_READ_UINT32_BE (traks);
438 moov_recov_parse_moov_timescale (MoovRecovFile * moovrf)
441 if (fread (ts, 1, 4, moovrf->file) != 4)
443 moovrf->timescale = GST_READ_UINT32_BE (ts);
448 skip_atom (MoovRecovFile * moovrf, guint32 expected_fourcc)
453 if (!read_atom_header (moovrf->file, &fourcc, &size))
455 if (fourcc != expected_fourcc)
458 return (fseek (moovrf->file, size - 8, SEEK_CUR) == 0);
462 moov_recov_parse_tkhd (MoovRecovFile * moovrf, TrakRecovData * trakrd)
468 /* make sure we are on a tkhd atom */
469 if (!read_atom_header (moovrf->file, &fourcc, &size))
471 if (fourcc != FOURCC_tkhd)
474 trakrd->tkhd_file_offset = ftell (moovrf->file) - 8;
476 /* move 8 bytes forward to the trak_id pos */
477 if (fseek (moovrf->file, 12, SEEK_CUR) != 0)
479 if (fread (data, 1, 4, moovrf->file) != 4)
482 /* advance the rest of tkhd */
483 fseek (moovrf->file, 68, SEEK_CUR);
485 trakrd->trak_id = GST_READ_UINT32_BE (data);
490 moov_recov_parse_stbl (MoovRecovFile * moovrf, TrakRecovData * trakrd)
496 if (!read_atom_header (moovrf->file, &fourcc, &size))
498 if (fourcc != FOURCC_stbl)
501 trakrd->stbl_file_offset = ftell (moovrf->file) - 8;
502 trakrd->stbl_size = size;
505 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
507 if (fourcc != FOURCC_stsd)
509 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR) != 0)
512 trakrd->stsd_size = auxsize;
513 trakrd->post_stsd_offset = ftell (moovrf->file);
515 /* as this is the last atom we parse, we don't skip forward */
521 moov_recov_parse_minf (MoovRecovFile * moovrf, TrakRecovData * trakrd)
527 if (!read_atom_header (moovrf->file, &fourcc, &size))
529 if (fourcc != FOURCC_minf)
532 trakrd->minf_file_offset = ftell (moovrf->file) - 8;
533 trakrd->minf_size = size;
535 /* skip either of vmhd, smhd, hmhd that might follow */
536 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
538 if (fourcc != FOURCC_vmhd && fourcc != FOURCC_smhd && fourcc != FOURCC_hmhd &&
539 fourcc != FOURCC_gmhd)
541 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
544 /* skip a possible hdlr and the following dinf */
545 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
547 if (fourcc == FOURCC_hdlr) {
548 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
550 if (!read_atom_header (moovrf->file, &fourcc, &auxsize))
553 if (fourcc != FOURCC_dinf)
555 if (fseek (moovrf->file, auxsize - 8, SEEK_CUR))
558 /* now we are ready to read the stbl */
559 if (!moov_recov_parse_stbl (moovrf, trakrd))
566 moov_recov_parse_mdhd (MoovRecovFile * moovrf, TrakRecovData * trakrd)
572 /* make sure we are on a tkhd atom */
573 if (!read_atom_header (moovrf->file, &fourcc, &size))
575 if (fourcc != FOURCC_mdhd)
578 trakrd->mdhd_file_offset = ftell (moovrf->file) - 8;
580 /* get the timescale */
581 if (fseek (moovrf->file, 12, SEEK_CUR) != 0)
583 if (fread (data, 1, 4, moovrf->file) != 4)
585 trakrd->timescale = GST_READ_UINT32_BE (data);
586 if (fseek (moovrf->file, 8, SEEK_CUR) != 0)
592 moov_recov_parse_mdia (MoovRecovFile * moovrf, TrakRecovData * trakrd)
597 /* make sure we are on a tkhd atom */
598 if (!read_atom_header (moovrf->file, &fourcc, &size))
600 if (fourcc != FOURCC_mdia)
603 trakrd->mdia_file_offset = ftell (moovrf->file) - 8;
604 trakrd->mdia_size = size;
606 if (!moov_recov_parse_mdhd (moovrf, trakrd))
609 if (!skip_atom (moovrf, FOURCC_hdlr))
611 if (!moov_recov_parse_minf (moovrf, trakrd))
617 moov_recov_parse_trak (MoovRecovFile * moovrf, TrakRecovData * trakrd)
623 offset = ftell (moovrf->file);
628 /* make sure we are on a trak atom */
629 if (!read_atom_header (moovrf->file, &fourcc, &size)) {
632 if (fourcc != FOURCC_trak) {
635 trakrd->trak_size = size;
637 /* now we should have a trak header 'tkhd' */
638 if (!moov_recov_parse_tkhd (moovrf, trakrd))
641 /* FIXME add edts handling here and in qtmux, as this is only detected
642 * after buffers start flowing */
644 if (!moov_recov_parse_mdia (moovrf, trakrd))
647 trakrd->file_offset = offset;
648 /* position after the trak */
649 return fseek (moovrf->file, (long int) offset + size, SEEK_SET) == 0;
653 moov_recov_file_create (FILE * file, GError ** err)
656 MoovRecovFile *moovrf = g_new0 (MoovRecovFile, 1);
658 g_return_val_if_fail (file != NULL, NULL);
662 /* look for ftyp and prefix at the start */
663 if (!moov_recov_file_parse_prefix (moovrf)) {
664 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
665 "Error while parsing prefix atoms");
670 if (!moov_recov_file_parse_mvhd (moovrf)) {
671 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
672 "Error while parsing mvhd atom");
676 if (!moov_recov_parse_moov_timescale (moovrf)) {
677 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
678 "Error while parsing timescale");
681 if (!moov_recov_parse_num_traks (moovrf)) {
682 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
683 "Error while parsing parsing number of traks");
688 moovrf->traks_rd = g_new0 (TrakRecovData, moovrf->num_traks);
689 for (i = 0; i < moovrf->num_traks; i++) {
690 atom_stbl_init (&(moovrf->traks_rd[i].stbl));
692 for (i = 0; i < moovrf->num_traks; i++) {
693 if (!moov_recov_parse_trak (moovrf, &(moovrf->traks_rd[i]))) {
694 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
695 "Error while parsing trak atom");
703 moov_recov_file_free (moovrf);
708 moov_recov_file_free (MoovRecovFile * moovrf)
711 fclose (moovrf->file);
712 if (moovrf->traks_rd) {
713 for (i = 0; i < moovrf->num_traks; i++) {
714 atom_stbl_clear (&(moovrf->traks_rd[i].stbl));
716 g_free (moovrf->traks_rd);
722 moov_recov_parse_buffer_entry (MoovRecovFile * moovrf, TrakBufferEntryInfo * b)
724 guint8 data[TRAK_BUFFER_ENTRY_INFO_SIZE];
727 read = fread (data, 1, TRAK_BUFFER_ENTRY_INFO_SIZE, moovrf->file);
728 if (read != TRAK_BUFFER_ENTRY_INFO_SIZE)
731 b->track_id = GST_READ_UINT32_BE (data);
732 b->nsamples = GST_READ_UINT32_BE (data + 4);
733 b->delta = GST_READ_UINT32_BE (data + 8);
734 b->size = GST_READ_UINT32_BE (data + 12);
735 b->chunk_offset = GST_READ_UINT64_BE (data + 16);
736 b->sync = data[24] != 0;
737 b->do_pts = data[25] != 0;
738 b->pts_offset = GST_READ_UINT64_BE (data + 26);
743 mdat_recov_add_sample (MdatRecovFile * mdatrf, guint32 size)
745 /* test if this data exists */
746 if (mdatrf->mdat_size - mdatrf->mdat_header_size + size > mdatrf->data_size)
749 mdatrf->mdat_size += size;
753 static TrakRecovData *
754 moov_recov_get_trak (MoovRecovFile * moovrf, guint32 id)
757 for (i = 0; i < moovrf->num_traks; i++) {
758 if (moovrf->traks_rd[i].trak_id == id)
759 return &(moovrf->traks_rd[i]);
765 trak_recov_data_add_sample (TrakRecovData * trak, TrakBufferEntryInfo * b)
767 trak->duration += b->nsamples * b->delta;
768 atom_stbl_add_samples (&trak->stbl, b->nsamples, b->delta, b->size,
769 b->chunk_offset, b->sync, b->pts_offset);
773 * Parses the buffer entries in the MoovRecovFile and matches the inputs
774 * with the data in the MdatRecovFile. Whenever a buffer entry of that
775 * represents 'x' bytes of data, the same amount of data is 'validated' in
776 * the MdatRecovFile and will be inluded in the generated moovie file.
779 moov_recov_parse_buffers (MoovRecovFile * moovrf, MdatRecovFile * mdatrf,
782 TrakBufferEntryInfo entry;
785 /* we assume both moovrf and mdatrf are at the starting points of their
787 while (moov_recov_parse_buffer_entry (moovrf, &entry)) {
788 /* be sure we still have this data in mdat */
789 trak = moov_recov_get_trak (moovrf, entry.track_id);
791 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_PARSING,
792 "Invalid trak id found in buffer entry");
795 if (!mdat_recov_add_sample (mdatrf, entry.size))
797 trak_recov_data_add_sample (trak, &entry);
803 trak_recov_data_get_trak_atom_size (TrakRecovData * trak)
805 AtomSTBL *stbl = &trak->stbl;
808 /* write out our stbl child atoms */
811 if (!atom_stts_copy_data (&stbl->stts, NULL, NULL, &offset)) {
814 if (atom_array_get_len (&stbl->stss.entries) > 0) {
815 if (!atom_stss_copy_data (&stbl->stss, NULL, NULL, &offset)) {
819 if (!atom_stsc_copy_data (&stbl->stsc, NULL, NULL, &offset)) {
822 if (!atom_stsz_copy_data (&stbl->stsz, NULL, NULL, &offset)) {
826 if (!atom_ctts_copy_data (stbl->ctts, NULL, NULL, &offset)) {
830 if (!atom_stco64_copy_data (&stbl->stco64, NULL, NULL, &offset)) {
834 return trak->trak_size + ((trak->stsd_size + offset + 8) - trak->stbl_size);
841 moov_recov_get_stbl_children_data (MoovRecovFile * moovrf, TrakRecovData * trak,
844 AtomSTBL *stbl = &trak->stbl;
849 /* write out our stbl child atoms
851 * Use 1MB as a starting size, *_copy_data functions
852 * will grow the buffer if needed.
855 buffer = g_malloc0 (size);
858 if (!atom_stts_copy_data (&stbl->stts, &buffer, &size, &offset)) {
861 if (atom_array_get_len (&stbl->stss.entries) > 0) {
862 if (!atom_stss_copy_data (&stbl->stss, &buffer, &size, &offset)) {
866 if (!atom_stsc_copy_data (&stbl->stsc, &buffer, &size, &offset)) {
869 if (!atom_stsz_copy_data (&stbl->stsz, &buffer, &size, &offset)) {
873 if (!atom_ctts_copy_data (stbl->ctts, &buffer, &size, &offset)) {
877 if (!atom_stco64_copy_data (&stbl->stco64, &buffer, &size, &offset)) {
889 moov_recov_write_file (MoovRecovFile * moovrf, MdatRecovFile * mdatrf,
890 FILE * outf, GError ** err)
894 guint8 *prefix_data = NULL;
895 guint8 *mvhd_data = NULL;
896 guint8 *trak_data = NULL;
897 guint32 moov_size = 0;
899 guint64 stbl_children_size = 0;
900 guint8 *stbl_children = NULL;
901 guint32 longest_duration = 0;
904 /* check the version */
905 if (fseek (moovrf->file, 0, SEEK_SET) != 0) {
906 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
907 "Failed to seek to the start of the moov recovery file");
910 if (fread (auxdata, 1, 2, moovrf->file) != 2) {
911 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
912 "Failed to read version from file");
915 version = GST_READ_UINT16_BE (auxdata);
916 if (version != ATOMS_RECOV_FILE_VERSION) {
917 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_VERSION,
918 "Input file version (%u) is not supported in this version (%u)",
919 version, ATOMS_RECOV_FILE_VERSION);
924 prefix_data = g_malloc (moovrf->prefix_size);
925 if (fread (prefix_data, 1, moovrf->prefix_size,
926 moovrf->file) != moovrf->prefix_size) {
927 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
928 "Failed to read the ftyp atom from file");
931 if (fwrite (prefix_data, 1, moovrf->prefix_size, outf) != moovrf->prefix_size) {
932 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
935 g_free (prefix_data);
938 /* need to calculate the moov size beforehand to add the offset to
939 * chunk offset entries */
940 moov_size += moovrf->mvhd_size + 8; /* mvhd + moov size + fourcc */
941 for (i = 0; i < moovrf->num_traks; i++) {
942 TrakRecovData *trak = &(moovrf->traks_rd[i]);
943 guint32 duration; /* in moov's timescale */
946 /* convert trak duration to moov's duration */
947 duration = gst_util_uint64_scale_round (trak->duration, moovrf->timescale,
950 if (duration > longest_duration)
951 longest_duration = duration;
952 trak_size = trak_recov_data_get_trak_atom_size (trak);
953 if (trak_size == 0) {
954 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_GENERIC,
955 "Failed to estimate trak atom size");
958 moov_size += trak_size;
961 /* add chunks offsets */
962 for (i = 0; i < moovrf->num_traks; i++) {
963 TrakRecovData *trak = &(moovrf->traks_rd[i]);
964 /* 16 for the mdat header */
965 gint64 offset = moov_size + ftell (outf) + 16;
966 atom_stco64_chunks_add_offset (&trak->stbl.stco64, offset);
970 GST_WRITE_UINT32_BE (auxdata, moov_size);
971 GST_WRITE_UINT32_LE (auxdata + 4, FOURCC_moov);
972 if (fwrite (auxdata, 1, 8, outf) != 8) {
973 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
978 mvhd_data = g_malloc (moovrf->mvhd_size);
979 if (fseek (moovrf->file, moovrf->mvhd_pos, SEEK_SET) != 0)
981 if (fread (mvhd_data, 1, moovrf->mvhd_size,
982 moovrf->file) != moovrf->mvhd_size)
984 GST_WRITE_UINT32_BE (mvhd_data + 20, moovrf->timescale);
985 GST_WRITE_UINT32_BE (mvhd_data + 24, longest_duration);
986 if (fwrite (mvhd_data, 1, moovrf->mvhd_size, outf) != moovrf->mvhd_size) {
987 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
993 /* write the traks, this is the tough part because we need to update:
995 * - sizes of atoms from stbl to trak
998 for (i = 0; i < moovrf->num_traks; i++) {
999 TrakRecovData *trak = &(moovrf->traks_rd[i]);
1000 guint trak_data_size;
1001 guint32 stbl_new_size;
1002 guint32 minf_new_size;
1003 guint32 mdia_new_size;
1004 guint32 trak_new_size;
1006 guint32 duration; /* in moov's timescale */
1008 /* convert trak duration to moov's duration */
1009 duration = gst_util_uint64_scale_round (trak->duration, moovrf->timescale,
1012 stbl_children = moov_recov_get_stbl_children_data (moovrf, trak,
1013 &stbl_children_size);
1014 if (stbl_children == NULL)
1017 /* calc the new size of the atoms from stbl to trak in the atoms tree */
1018 stbl_new_size = trak->stsd_size + stbl_children_size + 8;
1019 size_diff = stbl_new_size - trak->stbl_size;
1020 minf_new_size = trak->minf_size + size_diff;
1021 mdia_new_size = trak->mdia_size + size_diff;
1022 trak_new_size = trak->trak_size + size_diff;
1024 if (fseek (moovrf->file, trak->file_offset, SEEK_SET) != 0)
1026 trak_data_size = trak->post_stsd_offset - trak->file_offset;
1027 trak_data = g_malloc (trak_data_size);
1028 if (fread (trak_data, 1, trak_data_size, moovrf->file) != trak_data_size) {
1031 /* update the size values in those read atoms before writing */
1032 GST_WRITE_UINT32_BE (trak_data, trak_new_size);
1033 GST_WRITE_UINT32_BE (trak_data + (trak->mdia_file_offset -
1034 trak->file_offset), mdia_new_size);
1035 GST_WRITE_UINT32_BE (trak_data + (trak->minf_file_offset -
1036 trak->file_offset), minf_new_size);
1037 GST_WRITE_UINT32_BE (trak_data + (trak->stbl_file_offset -
1038 trak->file_offset), stbl_new_size);
1040 /* update duration values in tkhd and mdhd */
1041 GST_WRITE_UINT32_BE (trak_data + (trak->tkhd_file_offset -
1042 trak->file_offset) + 28, duration);
1043 GST_WRITE_UINT32_BE (trak_data + (trak->mdhd_file_offset -
1044 trak->file_offset) + 24, trak->duration);
1046 if (fwrite (trak_data, 1, trak_data_size, outf) != trak_data_size) {
1047 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1050 if (fwrite (stbl_children, 1, stbl_children_size, outf) !=
1051 stbl_children_size) {
1052 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1057 g_free (stbl_children);
1058 stbl_children = NULL;
1061 /* write the mdat */
1062 /* write the header first */
1063 GST_WRITE_UINT32_BE (auxdata, 1);
1064 GST_WRITE_UINT32_LE (auxdata + 4, FOURCC_mdat);
1065 GST_WRITE_UINT64_BE (auxdata + 8, mdatrf->mdat_size);
1066 if (fwrite (auxdata, 1, 16, outf) != 16) {
1067 ATOMS_RECOV_OUTPUT_WRITE_ERROR (err);
1071 /* now read the mdat data and output to the file */
1072 if (fseek (mdatrf->file, mdatrf->mdat_start +
1073 (mdatrf->rawfile ? 0 : mdatrf->mdat_header_size), SEEK_SET) != 0)
1076 data = g_malloc (4096);
1077 while (!feof (mdatrf->file)) {
1080 read = fread (data, 1, 4096, mdatrf->file);
1081 write = fwrite (data, 1, read, outf);
1083 if (write != read) {
1084 g_set_error (err, ATOMS_RECOV_QUARK, ATOMS_RECOV_ERR_FILE,
1085 "Failed to copy data to output file: %s", g_strerror (errno));
1094 g_free (stbl_children);
1096 g_free (prefix_data);